The dog in Ontario had chewed on a wild goose before getting sick. The number of documented cases of avian flu in animals other than birds, such as cats and dogs, is low. Pet owners can take steps to protect their cats and dogs. In the first case of its kind, a dog in Canada has died with avian flu. The domestic dog was discovered to be infected with bird flu after it chewed on a wild goose and died, according to the Canadian Food Inspection Agency and the Public Health Agency of Canada.